States have also funneled money to crisis pregnancy centers through "Choose Life" license plates.

According to the Guttmacher Institute, of the 28 states that allow such license plates, 15 donate a portion of the revenue raised to specific crisis pregnancy organizations; 18 donate to adoption agencies.

A federal judge in December 2012 blocked North Carolina from issuing "Choose Life" license plates -- a portion of whose revenues would have gone to a private organization that funds crisis pregnancy centers in the state -- without providing an alternative plate supporting abortion rights.

Wisconsin Rep. Andre Jacque (R-Bellevue) introduced a bill to allow a "Choose Life" license plate in March 2012 but it did not advance.

There is considerable support among state lawmakers for crisis pregnancy centers, however. In 2011 the Republican-controlled Wisconsin Legislature approved a resolution (PDF) honoring centers for "the tremendous, life-affirming impact of pregnancy centers on the women, men, and children they serve" throughout Wisconsin.